122991884 has 12 divisors (see below), whose sum is σ = 215738208. Its totient is φ = 61352400.

The previous prime is 122991877. The next prime is 122991917. The reversal of 122991884 is 488199221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33947 + ... + 37394.

It is an arithmetic number, because the mean of its divisors is an integer number (17978184).

Almost surely, 2^122991884 is an apocalyptic number.

It is an amenable number.

122991884 is a deficient number, since it is larger than the sum of its proper divisors (92746324).

122991884 is a wasteful number, since it uses less digits than its factorization.

122991884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71776 (or 71774 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 122991884 is about 11090.1706028356. The cubic root of 122991884 is about 497.3080447641.

The spelling of 122991884 in words is "one hundred twenty-two million, nine hundred ninety-one thousand, eight hundred eighty-four".